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Emerging evidence indicates that p120 may also play an important role in inflammatory responses, and the regulatory mechanisms are still unknown. In the present study, we showed that p120 was associated with airway inflammation. p120 downregulation induced nuclear factor-<jats:italic>\u03ba<\/jats:italic>B (NF-<jats:italic>\u03ba<\/jats:italic>B) activation, accompanied with I<jats:italic>\u03ba<\/jats:italic>B<jats:italic>\u03b1<\/jats:italic>degradation, p65 nuclear translocation, and increased expression of interleukin-8 (IL-8) in lipopolysaccharide (LPS)- treated C57BL mice and human bronchial epithelial cells (BECs). Moreover, we first found that p120 directly coprecipitated with RhoA in BECs. After LPS stimulation, although total RhoA and p120-bound RhoA were unchanged, RhoA activity was increased. Y27632, a ROCK inhibitor, could partially inhibit nuclear translocation of p65. Overexpression of p120 inactivated RhoA and NF-<jats:italic>\u03ba<\/jats:italic>B in BECs, whereas p120 loss significantly increased RhoA activity, p65 nuclear translocation, and IL-8 expression. Taken together, our study supports the regulatory role of p120 in airway inflammation and reveals that p120 may modulate NF-<jats:italic>\u03ba<\/jats:italic>B signaling partially through RhoA.<\/jats:p>","DOI":"10.1155\/2014\/932340","type":"journal-article","created":{"date-parts":[[2014,6,3]],"date-time":"2014-06-03T21:11:13Z","timestamp":1401829873000},"page":"1-11","source":"Crossref","is-referenced-by-count":17,"title":["p120 Modulates LPS-Induced NF-<b><i>\u03ba<\/i><\/b>B Activation Partially through RhoA in Bronchial Epithelial Cells"],"prefix":"10.1155","volume":"2014","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-4958-5241","authenticated-orcid":true,"given":"Lingzhi","family":"Qin","sequence":"first","affiliation":[{"name":"Key Laboratory of Pulmonary Disease of Ministry of Health of China, Institute of Pathology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei 430030, 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